Boring or reaming and grinding machine.



ltho, Pulloy & whool.

UNITED STATES PATENT OFFICE.

EDSON A. CHAMBERLIN, F WORCESTER, MASSACHUSETTS, ASSIGXOB OF ONE-THIRD TO JAMES H. WYLIE AND ONE-THIRD TO FREDERICK S. \VYLIE, OF HOLYOKE, LLXSSACHU SETTS.

BORING O3 REAMING AND GBDTDDIG ILA-CHINE.

To all whom it may concern:

Be it known that I, Enson A. CHAMBER- pm, a citizen of the United States of Amer- 10a, and resident of Worcester, in the county 5 of Worcester and State of Massachusetts,

have invented certain new and useful ImprovementsinBoringorRea and Grindmg Machines, of which the following is a full,

clear. and exact description.

I This invention relates to a machine having combined therein means for both boring or reaming, and grindin the same being available on such work, For instance, as that of I boring or reamin out an engine cylinder and 16 grinding the hole or cylindrical chamber therein.

The object of the invention is to provide a machine of simple and practical character which is capable of convenient and satisfac- 20 tory employment for boring, reaming, or turning, and also for thereafter grinding the internal wall of the part in which the hole or chamber therein has been bored, reamed, or turned.

In the present machine the table on which the work is su ported and held is rotatable, and the spind e or bar carrying the tool-for internally boring, reaming or turning the cylinder or other part is non-rotatable on a 80 ca head therefor, which head, however, has ot a vertical feed and a cross feed, as usual variously in planing, drilling and grinding machinery; and the said carryin (1 has the spindle of the driving whee 85 mounted thereon in such a manner that suchspindle may be rotated, preferably, in a direction the reverse from the rotation of the work table, and may be swung away from a vertical position directly over the work 40 table, 05 to one side to leave unobstructed a space for the work and for the reaming or other tool working therewithin.

The invention resides in a machine of the character described. and for the purpose int8 dicated,and which machine has many parts and which m d common mployment,-in means for moimting the lupporting bar or nonrotatable spindle and the rotatable spindle both on one 3! feed head with means for acqu v the rotation ii the grinding spindle, and 0 means for transversely swinging the grinding spindie away from its working osition without disconnection from, or inte erence with, the

85 spindle rotating means. 7

Specification of Letters Patent.

Application flied. July 10, 1906. Serial No. 325,530.

Patented Sept. 1:, 1908.

The invention further resides in novel means for rotating the work table at various speeds, as may be desired, and in the means for changing such speeds of rotation.

The invention furthermore resides in the rovision on the rotary work table of a work liolding slide, and means for ositioning such slide horizontally on the ta le rope-r; and further invention is to be foun in various constructions, arrangements and combinations of parts as hereinafter described.

The improved machine is illustrated in the accompanying drawings, in which,-

Figure 1 is a front elevation. Fig. 2 is a. side elevation. Fig. 3 is a plan view of so much of the machine as may be seen below the plane indicated by line 3--3, Fig. 1. Fig. 4 is a central vertical sectional view as taken from front to roar through the lower portion of the machine, drawn on a larger scale than the preceding views. Fig- 5 is a sectional view as taken at right angles to Fig. 4, and as indicated by the section line 55. The section line 4-4, on Fig. 5 indicates the plane onwhich Fig. 4 is taken. Fig. 6 is ahorizontal sectional viewas taken online 6-6, Fig. 1. Fig. 7 is a vertical sectional view through the bearings for the grinding spindle, as taken on line 77, Fig. 6.

Similar characters of reference indicate corres onding parts in all of the views.

In t e drawmgs,-A represents the somewhat heavy and massive cast iron frame of the machine comprising a widened base ortion a and rear standard I) fitted about w rich is a. vertically movable head B for which a vertical feed mechanism d of any usual or ap roved description is provided.

re main head B has a transversely and horizontall slidable head C for which the hand whee c indicates a ortion of the cross feed of a usual kind there or.

The secondary head C has mounted themonastillfm'therheador rtDforthe non-rotatable spindle or bar which carries at its lower end a suitable tool 2 forrcaming, boring, ortm'ning. The said secondary head also carriis a still further head E sugporting bearings e for the rotatable spindle which at its ower end carries a grinding wheel y; 1T5 the said head E has a substantially circular back or attachment plate f with concentric arc-shaped slots f 2 through which the clamping bolts or scrmf are passed, thcsamo also extending with a screw engagement into 55 oftheslide,theacrew the head C. By loosening the said screws the head and mdle carried thereb may be positioned as s own in full lines in ig. 1, or

s sdshown by dotted lines, swung off to one i s1 e.

The grinding wheel s indle supported for rotation by the head E has a pulley g affixed at its upper end, and the primary head B, which is cored out and made hollow, has supports for belt guiding sheaves 10, 10, 12, 12, and 13, and the belt driving pulley 14 on a bracket 15 which is formed as a artof, and moves up and down with, suc vertically mo feed head B. Y

The elt ulley 14 is spline engaged with a vertical sha t h adapted to be clutch connected at h with a pulley h axially alined therewith,such pulley h being driven with a cross belt h from a pulley h on a driving shaft H for the driving of which a pulley h is provided alongside the pulley 71.

By reason of the provision of a somewhat common s line engagement between the belt driving pu e 14 and the vertical shaft h, the

pulley 14 an spindle driving belt 11 may have their required vertical movements notwithstanding the fact that the rotary shaft h is immovable in the direction of its axis.

The belt 11 has the rear course thereof running from round the rear portion of pulley 14 horizontally and transversely in engagement with the pair of opposite sheaves 12, 12, and around the tensioning sheave 13, while the forward course of the belt has be tween the front edges of pulley 14 and tensioning sheave 13 a forwardly extending loo return engaged around the grinding whee spindle drivin pulley g, and guided by the pair of small 5 eaves 10, 10. This arrangement of the driving belt and the supporting and guiding means therefor permits the grinding spindle carrying head to be swiveled on the head 0, and also to'be' moved as one with such head relatively to the main vertical feed head B without interfering with, or without being interfered with by, the spindle driving connections.

J represents the rotary work table.

K represents the work holding slide movable horizontally diametrically crosswise on the rotary work table J,j representing the screw for adjustably positioning the work holding slide on the rotary table, such screw ing the depending nut or projection 7" being endwise immovable, but rotatable, in horizontal be s therefor within the thickness of the wor isbler-and the base portion a of the Inn- *chineframeismsdewithanmnularvor trough-shaped groove 1 in which fits a V- diaped annular rib m formed on the underside ofach-cularilange whichismadeatthe gaper portion of an axially vertical rotatable aft M, which shaft sustains the work table.

The said shaft andthe rotary work table therewith are caused to run steadily not only by reason of the annular rib and groove engagement m, it, but also by reason of the upper and lower bearings n and n provided within the hollow base portion of the ma- 7o chine frame.

The circular rotary work table J, the flanged upper end of the shaft M, and the annular spur gear N, although separately made, are all rigidly screwed or clamped one to the other, so that to all intents and purposes the arts are as if made as one.

It will e noted that the annular gear N seats against a shoulder in the bottom of the table J, and also against an annular shoulder formed in the flanged end of the shaft. Thus the gear is held, not only by its own screws, but also by the screws connecting the flange and work table, since, by tightening up these screws, the gear is clamped between the flange and table. By this arrangement, a very rigid structure is obtained.

A short vertical shaft 0 is arranged opposite and parallel with the upper portion of the aforesaid shaft M fitted for rotation in a 90 journal bearing 0; and such shaft has at its upper end a spur pinion gear p which meshes into the gear wheel X aifixed at the end ortion of the work table; and at its lower en the said short shaft 0 is provided with abevel gear wheel g which is constantly in mesh with an axially horizontal bevel gear wheel r affixed on a rotatable horizontal shaft s, and which shaft has at different portions thereof spur gear wheels t and t of different sizes. Another shaft P is provided somewhat below and parallel with the shaft s, the same being driven by the cone pulleys Q which in turn are driven by the belt from the cone pulleys 2 on the main shaft I of the machine;- on w ch main shaft the aforementioned pulleys h and h are provided;

' The shaft "P is made with a spline v, and a pair of hub-united speed changing spur gear wheels to and w are slidable alon the length of the shaft so that the one u: may be in clutch with the gear wheel t, and the one it: out of gear with the gear wheel t, or vice versa according as the osition of these gears is controlled by the per device 2.

Having descri the components of the present machine in r t of the mangements thereof, it will be apparent that one and till; samelm aetbiggggambfid as set forth, may emp 0 or ng, reaming, orturningandalsofor theboreor work An to be finishe is by usual means in an axial vertical position on the slide K of the rotary work table, the work being le of adjustment in -.a horizontal line by moving the slide forwardly and rearwardly by means of the screw 1'; and the tool carrying spindle F may be adjusted horizontally or radiallyrelatively Lltho, Pulley wheel.

to the work by the usual cross feed for the head C; and the tool is fed in a downward direction for working progressively on the constantly rotating cylinder or iece of work by means of the usual vertical eed mechanism of the machine.

As manifest, at the time of usin the nonrotatable boring or rea a tool, he head E is swun so as to remove t e grindin wheel and the bearing supports for its spin e off to the one side, as indicated in Fig. 1. And when the cylinder or piece to be further finished is to be operated on b the grinding wheel, the latter and its spindle are brought to, and secured in, the axial vertical position, and also brou ht to presentation properly against the side of the internal wall of the cylinder and fed downwardly until the entire wall height is subjected to the action of the grinding wheel which in ractice is caused to rotate reversely from t e rotation of the work.

In the foregoing description and in the following claims the terms vertically movable and transversely and horizontally slidable and equivalent or correspondin terms, are to be understood as used m are ative sense only, being applicable to the arrangement of machine shown in the drawing; and such terms are not to be considered as restrictive, for, obviously if the work table should be disposed to rotate in any plane other than ahorizontal one, the arrangement of the other elements would be altered accordingly.

Having thus described my invention what I claim is:

1. In a machine tool, a frame, upper and lower hearings in said frame, a vertical shaft mounted in said bearin s, anannular flange at the up er end of said shaft andprovided with a V-s a ed rib, and an annular seat supported by said frame and adapted to receive said rib and su port said shaft.

- 2. In a mac e tool, a frame, a vertical shaft journaled therein and provided at its top with an annular flange, a rotating work table removably secured to said flange, a separate, removable annular drivm gear secured to the bottom of said table and clamped between said table and flange, and a pinion meshing with said driving gear, and also j ournaled in said frame.

3. In a machine tool, awork table, a sliding head disposed above said table, and ca able of both transverse and perpendicular a j ustment, a fixed and rotatable tool both carried by said head, said rotatable tool being also plapgble of an angular adjustment on said 4. In a machine tool, a rotary work-holding table, a fixed tool arranged above the same, and capable of a plurality of different adjustments, and a rotatin tool also arranged above said table, and having angular, vertical, and horizontal adjustments.

5. In a machine tool, in combination, a rotating work-holder, and means for driving the same, a fixed tool, ca able of adjustments, mounted above the holder, a revolving tool, and means for driving it, also mount'ed above said holder, and means whereby said revolving tool may be swung aside, when the fixed tool is in use.

6. In a machine tool, a work table, a rotatable tool arranged above the same, an adjustable head for su porting said tool, an'

arm carrying said too and swiveled on said head, said arm also carrving a belt pulley connected to said tool, a driving wheel and a plurality of guide pullevs suitably supported and a driving belt exteiiding from sai driving wheel around said belt pulley, and also" passing around said guide pulleys, the arrangementbeing such that said tool cangiug arm may be adjusted both verticall an angularl without interfering with t e operation 0 said belt.

Signed by me at Springfield, Mass, in presence of two subscribing witnesses.

EDSON A. CHAMBERLIN. Witnesses:

War. S. Bmows, G. B. Dnrscou. 

